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Iframe downloading #37

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merged 1 commit into from
May 13, 2021
Merged

Iframe downloading #37

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40 changes: 40 additions & 0 deletions features/download.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,40 @@
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Download</title>
</head>
<body>
<p><a href="../index.html">[Home]</a></p>

<p>Download PDF</p>
<ul>
<li><a href="download.pdf" target="_blank">Open PDF _blank</a>
<li><a href="download.pdf" download target="_blank">Download PDF _blank</a>
<li><a href="download.pdf">Open PDF</a>
<li><a href="download.pdf" download>Download PDF</a>
</ul>

<p>Download via iframe</p>
<ul>
<li><a href="#" class="init-iframe-download" data-type="json" >Init iframe JSON load</a>
<li><a href="#" class="init-iframe-download" data-type="pdf" >Init iframe PDF load</a>
</ul>
<div id="iframe-container"></div>

<script>
const iframeContainer = document.getElementById('iframe-container');
const initIframeDownloadLinks = document.querySelectorAll('.init-iframe-download');
[...initIframeDownloadLinks].forEach((link) => {
link.addEventListener('click', () => {
const iframe = document.createElement('iframe');
iframe.style.display = 'none';
iframe.src = `./download/${link.dataset.type}`;
iframeContainer.appendChild(iframe);
});
});
</script>

</body>
</html>
21 changes: 0 additions & 21 deletions features/pdf-download.html
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2 changes: 1 addition & 1 deletion index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ <h2>Browser Features</h2>
<li><a href="./features/url-schemes.html">URL Schemes</a></li>
<li><a href="./features/stack-tracing/">Stack tracing</a></li>
<li><a href="./features/canvas-draw.html">Canvas draw</a></li>
<li><a href="./features/pdf-download.html">PDF download</a></li>
<li><a href="./features/download.html">Downloads</a></li>
</ul>

<h2>Security</h2>
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26 changes: 26 additions & 0 deletions server.js
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Original file line number Diff line number Diff line change
Expand Up @@ -192,3 +192,29 @@ app.get('/security/csp-report/reports', (req, res) => {
cspIds.delete(req.query.id);
}
});

function downloadPDF (res) {
res.download('./features/download.pdf');
}

function downloadJSON (res) {
const json = JSON.stringify({ example: 'test' });
const buf = Buffer.from(json);
res.writeHead(200, {
'Content-Type': 'application/octet-stream',
'Content-disposition': 'attachment; filename=data.json'
});
res.write(buf);
res.end();
}

app.get('/features/download/:type', (req, res) => {
switch (req.params.type) {
case 'json':
downloadJSON(res);
break;
case 'pdf':
downloadPDF(res);
break;
}
});